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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Coliform and microbial samples

MS0440003 , Columbus Light & Water

7 of 9,675 results on record were positive for coliform or another organism the agency tests for. The most recent was December 1, 2025.

They fall across 7 of the 7,469 samples on record.

Every sample on record, October 7, 2003 to August 11, 2026. These figures cover the whole record; the list of samples further down is narrowed.

This system’s violations

The most recent samples

Showing samples collected between September 28, 2024 and September 28, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

Choose a date range

The list below shows 331–345 of 586 samples in this date range, newest first.

Routine (9), TG (3) and Repeat (3). The agency publishes no name for the code TG, so none is shown — this page does not invent labels the agency has not published.

Coliform and microbial sample results for Columbus Light & Water, 331 to 345 of 586 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jul 8, 2025 15:15
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-250519-27148
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 15:15, sampling point DS000 Coliform (TCR)
Absence , sample collected Jul 8, 2025 15:15, sampling point DS000 E. Coli
Collected
Jul 8, 2025 14:16
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-250519-27149
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 14:16, sampling point DS000 Coliform (TCR)
Absence , sample collected Jul 8, 2025 14:16, sampling point DS000 E. Coli
Collected
Jul 8, 2025 14:23
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-250519-27150
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 14:23, sampling point DS000 Coliform (TCR)
Absence , sample collected Jul 8, 2025 14:23, sampling point DS000 E. Coli
Collected
Jul 8, 2025 14:46
Sampling point
DS000 Distribution
Sample type
Repeat
Lab sample
BACT-250519-27152
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 14:46, sampling point DS000 Coliform (TCR)
Absence , sample collected Jul 8, 2025 14:46, sampling point DS000 E. Coli
Collected
Jul 8, 2025 15:03
Sampling point
DS000 Distribution
Sample type
Repeat
Lab sample
BACT-250519-27153
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 15:03, sampling point DS000 Coliform (TCR)
Absence , sample collected Jul 8, 2025 15:03, sampling point DS000 E. Coli
Collected
Jul 8, 2025 13:35
Sampling point
TC0007 Outside Faucet
Sample type
Repeat
Lab sample
BACT-250519-27151
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 8, 2025 13:35, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jul 8, 2025 13:35, sampling point TC0007 E. Coli
Collected
Jul 7, 2025 10:27
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27138
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 10:27, sampling point TC0017 Coliform (TCR)
Absence , sample collected Jul 7, 2025 10:27, sampling point TC0017 E. Coli
Collected
Jul 7, 2025 07:08
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27133
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 07:08, sampling point TC0018 Coliform (TCR)
Absence , sample collected Jul 7, 2025 07:08, sampling point TC0018 E. Coli
Collected
Jul 7, 2025 07:33
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27134
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 07:33, sampling point TC0019 Coliform (TCR)
Absence , sample collected Jul 7, 2025 07:33, sampling point TC0019 E. Coli
Collected
Jul 7, 2025 07:50
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27135
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 07:50, sampling point TC0020 Coliform (TCR)
Absence , sample collected Jul 7, 2025 07:50, sampling point TC0020 E. Coli
Collected
Jul 7, 2025 08:24
Sampling point
TC0021 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27137
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 08:24, sampling point TC0021 Coliform (TCR)
Absence , sample collected Jul 7, 2025 08:24, sampling point TC0021 E. Coli
Collected
Jul 7, 2025 08:07
Sampling point
TC0023 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27136
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 08:07, sampling point TC0023 Coliform (TCR)
Absence , sample collected Jul 7, 2025 08:07, sampling point TC0023 E. Coli
Collected
Jul 7, 2025 11:30
Sampling point
TC0029 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27141
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 11:30, sampling point TC0029 Coliform (TCR)
Absence , sample collected Jul 7, 2025 11:30, sampling point TC0029 E. Coli
Collected
Jul 7, 2025 11:11
Sampling point
TC0039 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27140
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 11:11, sampling point TC0039 Coliform (TCR)
Absence , sample collected Jul 7, 2025 11:11, sampling point TC0039 E. Coli
Collected
Jul 7, 2025 10:57
Sampling point
TC0040 Outside Faucet
Sample type
Routine
Lab sample
BACT-250519-27139
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 7, 2025 10:57, sampling point TC0040 Coliform (TCR)
Absence , sample collected Jul 7, 2025 10:57, sampling point TC0040 E. Coli